Adjustable elbow for furnaces



Dec. 19, 1933. R, KLOMPARENS 1,939,987

ADJUSTABLE ELBOW FOR FURNACES Filed Dec. 8, 1930 previously been used for this purpose, each size Patented` Dec.k 19, 1933 Roy Klomparens, Providence, R. `I. Application December s, 1930.' serial No. 500,794

1 Claim.

'Ihis invention relates to an adjustable elbow, particularly adapted for use in furnace installation. In installing furnaces a number of pipes are used, some for carrying warm air from the furnace casing to the rooms of the building, and others for carrying smoke and other product-s of combustion from the furnace to the chimney. Frequently there are bends to be made in these pipes to change their direction, and elbows have .of pipe requiring a size of elbow to fit it.'

It is a primary object and purpose of the present invention to provide an elbow construction of universal adaptability and with which a pipe, like a smokepipe, may be turned at any desired angle with the use of Vonly one construction of elbow, and also in which with one construction of elbow pipes of dierent diameters within reasonable limits yas to size may be connected and either carried in a straight line orat an angle to each other.

An understanding of the invention may be had from the following description, taken in connection with the accompanying drawing, in

u which,

Fig. 1 is an' elevation showing the elbow of my invention with two parts thereof joined to- Vgether.

Figs. 2 and 3 are elevations indicating how, with the `same elbow, the pipes may be located at different angles to each other.

Fig. 4 is a fragmentary enlarged section through the elbow and through pipes connected thereto, the pipes being located at an angle of substantially 90 to each other, and

Fig. 5 is a.4 section illustrative of the manner lin which the elbow parts may be Vnested together to occupy very little space in storage or shipment.

Like reference characters refer to like parts in the different figures of the drawing.

The elbow is made of two semi-spherical parts indicated at 1 and 2 pressed from thin sheet metal, the part 1 at its edges being formed with a bead 3 having a continuous groove at its inner side, while the edges of the part 2 are flared outwardly to make a continuous lip 4. With this construction the two parts 1 and 2 of the elbow may be joined together by snapping the bead'3 over the lip 4 as best shown in Fig..4; Aand by reason of the connection made, the two'parts 1 and 2 may be turned about an axis perpendicular to the plane of the joint between said parts.

In practice a small opening 5 is cut through each of the parts 1 and 2 of the elbow construction though this is in no sense absolutely neces-V sary. These openings are made so that the installer of the furnace may, with tinv shears, cut the same larger to correspond with the diameter of the pipe 6 which is to be used. And of course the openings which are cut may be either conthe openings 5 shown in Fig. 1.

The pipes 6 at the ends thereof where they are to be joined with the elbow parts 1 and 2 are slit longitudinally for short distances and in this manner provide inner Vears 7 and outer ears 8, C?

the former of which extend through the openings made in the elbow parts 1 and 2 and are then bent outwardly to engage against the inner sides of the elbow parts, while the latter are vbent outcentric or eccentric with respect to the centers of i wardly to bear against the outer sides of the "E elbow parts 1 and 2. The connections of the lengths of pipe 6 to the elbow members 1 and 2 are made before said members 1 and 2 are snapped together.`

construction, pipes 6 of different diameter may be used with the same size of elbow body or sphere, the openings made through the parts It is evident from the foregoing that with this 1 and 2 thereof being cut by the installer on thej:m job in accordance with the diameter of pipeffll For instance Withthe pipes located at an angleh"o of as shown in Fig. 4, by turning the two parts" 1 and 2 any angle between 90 and a straight angle can be attained; and any angles less than 90 should not be used in any furnace installation.

One feature ofthe invention, which is Vof con-^ siderable value is that the parts 1 and 2, whichf are used in making the elbow, can be nested together, as shown in Fig. v5, and occupy little space compared to an elbow which is made up complete at the factory. The partsV 1 and 2, .1

both being of semi-spherical form, are nested together and occupy little space either in the storage bins at the factory or in shipment from the factory to the place of installation of the furnace.V

The construction of elbow described is one oilvconsiderable practical advantage and merit, and has s o proved in use. The invention is defined in the appended claim and is to be considered comprehensive of all forms of structure coming 1 within their scope.

Withdrawal into the said groove, two pipesone ot them being located adjacent one of said circular openings and the other being located adjacent the other of said circular openings, each of said pipes having a diameter substantially equal to the adjacent opening and each of said pipes being revolubly and detachably connected onto the adjacent sem-spherical member, such connection including bendable integral means extending from said pipe both interiorly and exteriorly of the said semi-spherical member whereby the same is held with respect thereto for the purpose Y described.

ROY KLOMPARENS.

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